We?ve heard that bees are disappearing. But what is making bee colonies so vulnerable? Photographer Anand Varma raised bees in his backyard ? in front of a camera ? to get an up close view. This project, for National Geographic, gives a lyrical glimpse into a beehive ? and reveals one of the biggest threats to its health, a mite that preys on baby bees in the first 21 days of life.